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WO2001038252A3 - Monolithic alpha-alumina articles having controlled porosity, and sol-gel process for making them - Google Patents

Monolithic alpha-alumina articles having controlled porosity, and sol-gel process for making them Download PDF

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Publication number
WO2001038252A3
WO2001038252A3 PCT/US2000/031843 US0031843W WO0138252A3 WO 2001038252 A3 WO2001038252 A3 WO 2001038252A3 US 0031843 W US0031843 W US 0031843W WO 0138252 A3 WO0138252 A3 WO 0138252A3
Authority
WO
WIPO (PCT)
Prior art keywords
sol
alpha
alumina articles
making
gel process
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2000/031843
Other languages
French (fr)
Other versions
WO2001038252A2 (en
Inventor
De-Yin Jeng
Chorng-Jeou Chen
Takayuki Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yazaki Corp
Original Assignee
Yazaki Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yazaki Corp filed Critical Yazaki Corp
Priority to AT00978836T priority Critical patent/ATE261415T1/en
Priority to AU16254/01A priority patent/AU774233B2/en
Priority to DE60008920T priority patent/DE60008920T2/en
Priority to JP2001539812A priority patent/JP2003527277A/en
Priority to CA002392136A priority patent/CA2392136A1/en
Priority to EP00978836A priority patent/EP1237828B1/en
Publication of WO2001038252A2 publication Critical patent/WO2001038252A2/en
Publication of WO2001038252A3 publication Critical patent/WO2001038252A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/111—Fine ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/624—Sol-gel processing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Catalysts (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)

Abstract

Disclosed is a sol-gel process for making high-density monolithic alpha-alumina articles. Cracking problems caused by shrinkage of the gel during the drying and firing stages are minimized by controlling the temperature and humidity during the drying process and by using molds formed of prescribed polymeric materials, preliminarly coated with a silicone release agent. The process of the invention provides porous alpha-alumina articles having a controlled microstructure and a controlled pore size distribution, which are beneficial features when the material is used in practical applications, e.g., as substrates for gas sensors.
PCT/US2000/031843 1999-11-24 2000-11-15 Monolithic alpha-alumina articles having controlled porosity, and sol-gel process for making them Ceased WO2001038252A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
AT00978836T ATE261415T1 (en) 1999-11-24 2000-11-15 MONOLITHIC OBJECTS MADE OF ALPHA ALUMINUM OXIDE WITH CONTROLLED POROSITY AND SOL-GEL PROCESS FOR THEIR PRODUCTION
AU16254/01A AU774233B2 (en) 1999-11-24 2000-11-15 Monolithic alpha-alumina articles having controlled porosity, and sol-gel process for making them
DE60008920T DE60008920T2 (en) 1999-11-24 2000-11-15 MONOLITHIC OBJECTS MADE OF ALPHA ALUMINUM OXIDE WITH CONTROLLED POROSITY AND SOL-GEL PROCESS FOR THEIR PRODUCTION
JP2001539812A JP2003527277A (en) 1999-11-24 2000-11-15 Monolithic alpha-alumina articles with controlled porosity and sol-gel process for making those articles
CA002392136A CA2392136A1 (en) 1999-11-24 2000-11-15 Monolithic alpha-alumina articles having controlled porosity, and sol-gel process for making them
EP00978836A EP1237828B1 (en) 1999-11-24 2000-11-15 Monolithic alpha-alumina articles having controlled porosity, and sol-gel process for making them

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/448,712 US6383443B1 (en) 1999-11-24 1999-11-24 Sol-gel process for making monolithic alpha-alumina articles having controlled porosity
US09/448,712 1999-11-24

Publications (2)

Publication Number Publication Date
WO2001038252A2 WO2001038252A2 (en) 2001-05-31
WO2001038252A3 true WO2001038252A3 (en) 2002-02-21

Family

ID=23781380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/031843 Ceased WO2001038252A2 (en) 1999-11-24 2000-11-15 Monolithic alpha-alumina articles having controlled porosity, and sol-gel process for making them

Country Status (8)

Country Link
US (1) US6383443B1 (en)
EP (1) EP1237828B1 (en)
JP (1) JP2003527277A (en)
AT (1) ATE261415T1 (en)
AU (1) AU774233B2 (en)
CA (1) CA2392136A1 (en)
DE (1) DE60008920T2 (en)
WO (1) WO2001038252A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6620458B2 (en) * 2001-09-27 2003-09-16 The Regents Of The University Of California Method to produce alumina aerogels having porosities greater than 80 percent
KR100479901B1 (en) * 2001-11-29 2005-03-30 한국과학기술연구원 Bonded Film Type Solid Lubricant Composition Comprising Non-Organic Hybrid Binder Synthesized by a Sol-Gel Process and Method for Preparation Thereof
SG107103A1 (en) * 2002-05-24 2004-11-29 Ntu Ventures Private Ltd Process for producing nanocrystalline composites
US7517490B2 (en) 2002-10-16 2009-04-14 Ngk Insulators, Ltd. Method of manufacturing ceramic green body
EP1552913A4 (en) * 2002-10-16 2008-05-07 Ngk Insulators Ltd Method for producing ceramic formed article
US6964756B2 (en) * 2002-12-10 2005-11-15 Corning Incorporated Method for treating alumina honeycomb monoliths
DE10335224A1 (en) * 2003-07-30 2005-03-24 Universität Bremen Method for production of a molded body from ceramic material using metal powder and a colloidal sol useful in space shuttle-, microsystem-, fireproofing-, and/or foundry-, and/or biotechnology technology, e.g. chromatography
JP4511160B2 (en) * 2003-11-27 2010-07-28 日本碍子株式会社 Gas sensor
US20060286148A1 (en) * 2005-05-18 2006-12-21 Ppd, Inc. Method of forming implants
US7632773B2 (en) * 2007-01-04 2009-12-15 Headwaters Technology Innovation, Llc Methods for manufacturing supported catalyst from a porous support and a nanocatalyst solution
ES2317794B1 (en) * 2007-10-15 2010-02-16 Consejo Superior De Investigaciones Cientificas DOPING PROCEDURE FOR THE SINTERIZATION OF ALPHA-ALUMIN AND ALPHA-ALUMIN MATERIAL POLYCYSTALLINE.
US10182895B2 (en) * 2016-08-22 2019-01-22 Continental Dental Ceramics, Inc. Process for the fabrication of dental restorations
FR3122585A1 (en) 2021-05-04 2022-11-11 Universite Claude Bernard Lyon 1 Mesoporous solid to regulate humidity in enclosed spaces

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941719A (en) 1972-08-17 1976-03-02 Owens-Illinois, Inc. Transparent activated nonparticulate alumina and method of preparing same
JPS5110813A (en) * 1974-07-16 1976-01-28 Fujitsu Ltd Seramitsukukibanno seizohoho
NL188795C (en) * 1982-12-23 1992-10-01 Suwa Seikosha Kk METHOD FOR MANUFACTURING A QUARTZ GLASS
US4472510A (en) * 1982-12-23 1984-09-18 Dow Corning Corporation Carbon-containing monolithic glasses and ceramics prepared by a sol-gel process
US5204300A (en) * 1984-07-18 1993-04-20 Kawasaki Steel Corporation Methods of seeding sintered objects
JPS63151663A (en) * 1986-12-12 1988-06-24 セイコーエプソン株式会社 Method for manufacturing a molded product containing alumina as the main component
JPH085729B2 (en) * 1986-12-27 1996-01-24 新日本製鐵株式会社 Method for manufacturing ceramic precursor compact
JPH03153565A (en) * 1989-11-10 1991-07-01 Showa Denko Kk Production of alumina sintered body
US5076980A (en) * 1990-08-01 1991-12-31 Geltech, Inc. Method of making sol-gel monoliths

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
KWON S ET AL: "DRY PRESSING BOEHMITE GELS FOR THE FABRICATION OF MONOLITHIC ALPHA-AL2O3", JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY,NL,KLUWER ACADEMIC PUBLISHERS, DORDRECHT, vol. 9, no. 1, 1997, pages 53 - 64, XP000683826, ISSN: 0928-0707 *
OLSZYNA A R ET AL: "Sintering of High-Density, High-Purity Alumina Ceramics", CERAMICS INTERNATIONAL,GB,ELSEVIER APPLIED SCIENCE PUBL, BARKING, ESSEX, vol. 23, no. 4, 1997, pages 323 - 328, XP004063840, ISSN: 0272-8842 *

Also Published As

Publication number Publication date
JP2003527277A (en) 2003-09-16
AU774233B2 (en) 2004-06-17
EP1237828A2 (en) 2002-09-11
AU1625401A (en) 2001-06-04
EP1237828B1 (en) 2004-03-10
US6383443B1 (en) 2002-05-07
DE60008920D1 (en) 2004-04-15
ATE261415T1 (en) 2004-03-15
CA2392136A1 (en) 2001-05-31
DE60008920T2 (en) 2004-07-29
WO2001038252A2 (en) 2001-05-31

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